Numerology system based on Hebrew Alphabet

Many years ago, I came across a book which included info on Numerology. The alphabet had different (in some respects, not all) values than the traditional values which are used in most Numerology books today. I believe it said it was based on the Hebrew Alphabet. I am hoping to find the number values that matched what I read about.

To differentiate between the systems available, the greatest difference is that the number 7 was the value for the O and Z. Can anyone identify that system and post the entire English alphabet with their number values?